[Retracted] The Clinical Efficacy and Safety of Extracorporeal Shock Wave Lithotripsy in the Treatment of Patients with Urinary Calculi

Table 3

Comparison of VAS scores between the two groups of patients (%).

Groups	n	Mild pain	Moderate pain	Severe pain
Control group	45	28 (62.22)	12 (26.67)	5 (11.11)
Observation group	45	40 (88.89)	5 (11.11)	0 (0.00)
	—	4.204	5.123	5.248
	—	0.002	0.001	0.001